Wheel with detachable rim for solid-rubber tires.



M. POLCK. WHEEL MTH DETMHMLE BIM FOR SGU?) RUBBER TRES,

APPLICATmH msn 11mm,

EQU.

2 SHEETS-SHEET l.

EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE S.

memos.

UNI'LEDV STATES APATEM QFFICE.

m POLLCK, F WALTEBSHAUSEN, GERMANY.

l To all 'wlw-m. it, may concern.'

Be it known that I, MA: Pemex, subject of the Emperor of Germug, 4residing at Waitershausen, Thuringie, ermany, have invented certain. new and useful Improvements in Wheels with Detachable Rims for. Solid-Rubber Tires, offwhich the following is a specification.

With wheels with` solid rubber tires, such as are used fork vehicles of all kinds,it was hitherto cuetoma and neeesse tomechanem'lly` press the fd rubber tires which had been vulcanizedyon e steel rim ont@ the -wheels amdA there unite them with the wheeis. Obviously the tires had ilse to be mechanicallyy removed from the wheels, as it was impossible to remove the tires by hand from the wheels. Therefore it entailed much labor to remove defective tires and refit fresh tires. Above all it was impossible to exchange a defective tire for a fresh one while on the road.

It has been proposed to render detachable the 'p between tire and wheel by means of wedges., by making" the wheel of a pol gonal shape and providmg on the inside o the tire rim twice as many `surfaces as there were on the polygonal wheel. By such means triangular'spaces lwere produced luetwceenA the body of the wheel and the rim, into which wedges were driven in pairs, so as to obtain a strong" but detachable lock between wheel andrim. In practice these proposals have-#not proved vely satisfactbry, as en ch arrangement` uire a comparatively large space and the w eel therefore becameexceex` y sively heavy and assumed a not very ,hend-V economical veluefbeceme doubt 'wel ` of affording afreleble v`locklmtweei the body which will ellowfoixeedily mmm 'tach by itself. Thisobjectis a ing to the 'present' inventionby a acme appearance, and then the body of the wheel, and above allthe wheel rim had to Specification O {Letters Patent.

.vertically tothe planeV o the -w' v.F Bfis a sectional view catho Hee- IME* m 41 1, showing enig: partofthe section, 30 i .likewise turned with their th WHEEL wrm DETACHABLE nm rote soun-RUBBER Trims.

. Paeemec'uyw, 1915,

' Appunti ma my 14, 1914. um: mi. esame.

body of the wheel and the rim in mamen# nel", that the one surface of the' one Weds i5 curved to the radius of thev wheel body; the surface of the other' wedge to the rediris 94( the wheel rim, while the' surfaces of i the; wedges which lie against each other emA curved to a 'radius formin theme11 bie' tween the radius of the whee that' of the wheel rim. The wedge are' rim in 65 such` a manner, that each two wed@ an. driven by a third wedge which is M2. 1 driven between the ends of the wedges, and are thereb forced into space which is left free between and the rigidly fixedwedgee.j y' u: uw In the acoompan gtdrewing er: ment of the present inventengil exgplrliiellg* ligure lbeing a. wheel shown partly fj meel-'7 5 tion, the parte, however, not Y 'n ".2 all shawn of' the same seais".- 1 Fi :r3/isf* i tional view olthe linelhw li 11.

The gems 2 aiid'fa 'i-g'lgim larged scale. Fig. 4 is a part lof the according to the present invention,l shewnijj pertlyin sectiom'iri full size. y Onthe periphery o the wheel @which 35 is turned .in the ordinary, namely circular' 'fashion is arranged a plurality of wedges 1c, which meet in Seite with their .thicker endi, and. are secure to the wheel by meansof countersunk screws or the like, With these M wedges o coaet movable wedges d which are ici: ends tow 'ward each other, ,and :in their form closeiy follow theinside curvature of the tire rim u e, while the coectinfsurfeee of the wedges l" o und d 'are curve da radiaewhich is abort` the radius 0f the periphery of the wheeIfbody-andthat-of the tlre rim e. Thef wedgeeoare on the surface f "Against the wedges `f`"f with a lorigit`i1rll i3;m i"`y groove'. inewhioh ehe wedges d enggejgwitli ,e--,"eor1-e-sporxfhrig pre )eetion g, so 'ee-',tlipreventjtlhir moving or sli in sidewiseya... e *1 ,v l e 'cky ends-F1" the'wedjges e? are vergent and leave between tnemeeirm'e s sgecefree fora .wedge fi ytapered' zo their o liquity, which wedge i iearren te he driven by means of a screw le en a; mit l between the said pair of wedges d in idk reci-,ich vertical tothe plane of the wheeln -The screw k beers against a plate m, which is fitted into recessesy n in ltbe Wedgesd. For 4facilitating an easy dismantling the Wedges d are provided with recesses o, into which a pin orthe like maybe inserted, so

as to more easily move them. y y The advantages Whichthe arrangemen according to the present invention alords compared to previously disclosed arrangements consist essentially in the following; 1. The wedges c and d will by their tting` close to the Wheel `body .and the tire rim allow of reducing the annular space between, the. Wheel body and the tire rim to a minimum', as may beI seen from Fig. 4, which shows a.sect1on of the wheel 1n ull Size,

whereby the strength and ste'adiness of the Wheel is increased to a considerable extent. 2. The "machining of f the Wedges is extremel;7 simple asfilfie principal surfaces are forlnedxby circular curves, and may therefore beturncd. on a lathe.` Both wheel body and tire rim may be made of the customary, normal shapes so that also these may be both turned on. a latbe. l. By the `coacting of' comparatively flat wedges ay guarantee is given that the lock between tbe wheel body and the tire rim will not detach by itself.'

.. I claim:

l. In Wheels with detachable rims for solid rubber tires-having an annular space formed between the wheel body and the rim7 a series of alternately'tixed and movable wedges symmetrically arranged in said an? nular' space, sald Wedges being provlded' with circularwedging surfaces conforming.

in shape tothe opposing surfaces of said rim and Wheel body; the adjacent surfaces of each pair of movable wedges being transversely'divergent, a. locking key for each pair of movable wedges engaging with said diverging surfaces.

2. In wheels with. detachable rimsl for solid rubber tires, having an annular space formed between the Wheel bodyand the rim, a. series of alternately fixed andmovable wedges. .symmetricallyarranged in Asaid annularespace,.saidwedges being provided with circular wedging surfacesconforniing in shape to, the opposing surfaces ofisaid rim and Wheel body; the` adjacentJ surfaces Of. each pair of movable Wedges being tra-nsversely divergent, a locking keyfor each f pair of movable wedges engaging with said diverging surfaces and securingmean's for' saidlocking keys acting-,in vaxial direction of the wheel.

In testimony whereof the foregoing speci.-

cation is signed in the presence oftwo Witnesses. 1

t .l MAX POLACK. Witnesses: i

" H. A. LOVIAGUINE, AUG. MIGHIS. 

